GPT-5.4 Mini
✅ ActiveSmaller GPT-5.4 variant optimized for lower latency and cost while retaining strong tool and coding performance
Context Window
400K
Input Price
$0.75/1M
Output Price
$4.50/1M
Released
Mar 17, 2026
Capabilities
textvisionfunction-callingjson-modecode
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Get API Access →Version History
Mar 18, 2026Update
Rolled out in ChatGPT as Thinking access for Free and Go users and as a fallback for GPT-5.4 Thinking limits
Mar 17, 2026New Release
GPT-5.4 Mini released in the API, Codex, and ChatGPT with 400K context
Mar 17, 2026Pricing Change
API pricing set at $0.75 per 1M input tokens and $4.50 per 1M output tokens